Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a metal detection positioning device for laparoscopic surgery, which can detect metal under the direct view of a laparoscope and has the functions of accurate positioning and shortened surgery time.
In order to achieve the above purpose, the present invention provides the following technical solutions: the metal detection positioning device for the laparoscopic surgery comprises a search disc, a detector host machine, a connecting wire connected between the search disc and the detector host machine, and a detection sleeve pipe used for extending into an abdominal cavity, wherein the detection sleeve pipe is made of medical hard plastic, and the detection sleeve pipe is of a hollow pipe structure and comprises a detection channel used for allowing the search disc and the connecting wire to penetrate through the detection sleeve pipe; the search disk comprises an inner ring and an outer ring which are coaxially arranged, coils which are wound by leads are arranged in the inner ring and the outer ring, the coils are electrically connected with a connecting wire, the inner ring and the outer ring are made of medical flexible materials, and the search disk can be embedded into a detection channel after being subjected to radial pressure; the detection channel is internally connected with a push-pull rod for pushing and pulling the search disc in a sliding manner along the length direction of the detection channel, one end of the push-pull rod in the length direction is connected with the search disc, the other end of the push-pull rod penetrates through the detection channel and extends outwards towards the end part of the detection sleeve, and the push-pull rod can be retracted into the detection channel or pushed out from the end part of the detection sleeve by driving the search disc in the sliding process of the push-pull rod along the length direction of the detection sleeve.
The invention is further provided with: the detection sleeve comprises a first sleeve and a second sleeve inserted in the first sleeve, the first sleeve and the second sleeve are of hollow tube structure, a connecting tube for being in threaded connection with the second sleeve is coaxially arranged in the first sleeve, a gap for the second sleeve to be inserted is reserved between the connecting tube and the first sleeve, an internal thread is arranged on the inner wall of the second sleeve, an external thread is arranged on the outer wall of the connecting tube, and the second sleeve can be screwed into or screwed out of the first sleeve in the threaded connection process of the second sleeve and the connecting tube.
The invention is further provided with: the end portion spiro union of connecting pipe has the spacing ring that is used for restricting the second sleeve pipe and breaks away from in the clearance, be provided with the ring channel that is used for dodging the spacing ring on the inside wall of second sleeve pipe, the second sleeve pipe slides along its length direction in the ring channel along the length direction spiral in-process spacing ring of connecting pipe, the external diameter size of spacing ring and the internal diameter size looks adaptation of ring channel.
The invention is further provided with: the length dimension of the second sleeve is no greater than the depth dimension of the gap.
The invention is further provided with: one end of the push-pull rod, which is far away from the searching disc, is hinged with the end part of the operating rod, the middle part of the operating rod is hinged with the detection sleeve, and the operating rod can drive the searching disc to be retracted into the detection channel or pushed out from the end part of the detection sleeve through the push-pull rod in the rotation process of the operating rod around the hinged part of the operating rod and the detection sleeve.
The invention is further provided with: the push-pull rod is hinged with the operation rod through a hinge shaft in a penetrating manner, a sliding groove used for enabling the hinge shaft to slide along the length direction of the push-pull rod is formed in the push-pull rod, the sliding groove penetrates through the push-pull rod in the radial direction, and the length direction of the sliding groove is along the length direction of the push-pull rod; the operation rod is rotationally connected with the hinge shaft, the middle part of the hinge shaft is vertically provided with a fastening screw, the fastening screw and the hinge shaft are in a T-shaped structure, a fastening sliding groove for the fastening screw to penetrate is formed in the push-pull rod, the fastening screw penetrates to one end outside the fastening sliding groove and is in threaded connection with a fastening nut, the fastening sliding groove penetrates to the sliding groove, the length direction of the fastening sliding groove is consistent with the length direction of the push-pull rod, and the hinge shaft is fixedly connected with the push-pull rod when the fastening nut on the fastening screw is abutted to the outer side wall of the push-pull rod.
In summary, the invention has the following beneficial effects: in the laparoscopic surgery process, the detection sleeve can be placed into the abdominal cavity through the trocar, then the search disc contracted in the detection channel is pushed out of the end part of the detection sleeve through the push-pull rod to search for metal, and the laparoscopic surgery can be matched with the laparoscope, so that the metal can be detected under direct vision, and after the search is finished, the search disc can be contracted in the detection channel through the push-pull rod, so that the detection sleeve is conveniently taken out. The device can be matched with a laparoscope to detect and position residual metal in the abdominal cavity in the use process, is simple and convenient to operate, safe and accurate, and can shorten the operation time, so that the device is favorable for being suitable for various conditions.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Referring to fig. 1 and 2, a metal detection positioning device for laparoscopic surgery comprises a search disc 1, a detector host and a connecting wire 2 connected between the search disc 1 and the detector host, wherein the search disc 1 and the detector host can refer to the prior art, such as the working principle of a very low frequency metal detector, according to the specificity of the working principle, the search disc 1 comprises an inner ring 11 and an outer ring 12 which are coaxially arranged, coils wound by wires are arranged in the inner ring 11 and the outer ring 12, one end of the coil is electrically connected with one end of the connecting wire 2, the other end of the connecting wire 2 is electrically connected with the detector host, and the detector host is used as a controller for sounding whether metal exists or not.
The metal detection positioning device further comprises a detection sleeve 3 which is used for extending into the abdominal cavity, the detection sleeve 3 is made of medical hard plastic, such as hard PVC, the detection sleeve 3 has certain hardness and can be extended into the abdominal cavity, the operation is convenient, the detection sleeve 3 is of a hollow tube structure and comprises a detection channel 31 which is used for allowing the search disc 1 and the connecting wire 2 to penetrate through the detection sleeve 3, the inner ring 11 and the outer ring 12 are made of medical flexible materials, such as soft silica gel, the metal detection positioning device is convenient to compress under stress, when the search disc 1 is subjected to radial pressure, the metal detection positioning device can be embedded into the detection channel 31, a push-pull rod 4 for pushing and pulling the search disc 1 is connected in a sliding manner along the length direction of the detection channel 31, one end of the push-pull rod 4 in the length direction is connected with the search disc 1, the other end of the push-pull rod 4 penetrates through the detection channel 31 and extends out of the end of the detection sleeve 3, and the push-pull rod 4 can be retracted into the detection channel 31 or pushed out of the end of the detection sleeve 3 through driving the search disc 1 in the sliding process along the length direction of the detection sleeve 3.
The detection sleeve 3 can be placed into the abdominal cavity through the trocar in the laparoscopic surgery process, then the search disc 1 contracted in the detection channel 31 is pushed out of the end part of the detection sleeve 3 through the push-pull rod 4 to search for metals, and the laparoscopic surgery can be matched with the laparoscope, so that the metal can be detected under direct vision, after search, the search disc 1 can be contracted in the detection channel 31 through the push-pull rod 4, and then the detection sleeve 3 can be conveniently taken out. The device can be matched with a laparoscope to detect and position residual metal in the abdominal cavity in the use process, is simple and convenient to operate, safe and accurate, and can shorten the operation time, so that the device is favorable for being suitable for various conditions.
And each accessory of the device is of a separated design, so that the device is convenient to replace or be used as a disposable part, and is favorable for solving the aseptic requirement in operation.
The detection sleeve 3 comprises a first sleeve 32 and a second sleeve 33 inserted in the first sleeve 32, the first sleeve 32 and the second sleeve 33 are both in hollow tube structure, a connecting tube 34 for being in threaded connection with the second sleeve 33 is coaxially arranged in the first sleeve 32, a gap 35 for inserting the second sleeve 33 is reserved between the connecting tube 34 and the first sleeve 32, internal threads are arranged on the inner wall of the second sleeve 33, external threads are arranged on the outer wall of the connecting tube 34, and the second sleeve 33 can be screwed into or out of the first sleeve 32 in the threaded connection process of the second sleeve 33 and the connecting tube 34. The length of the detection sleeve 3 can be increased or decreased in the process of screwing the second sleeve 33 and the connecting pipe 34, so that the detection sleeve 3 is convenient for searching abdominal cavities with different depths, and the surgical operation of medical staff is facilitated. And the second sleeve 33 depends on the internal thread on the inner wall of the second sleeve 33 and the external thread on the outer wall of the connecting pipe 34 in the process of rotating in the first sleeve 32, so that no thread is exposed, sharp edges of the thread are prevented from scratching the abdominal wall, and the safety of the detection sleeve 3 in the operation is improved.
The end portion of the connecting pipe 34 is in threaded connection with a limiting ring 341 used for limiting the second sleeve 33 to be separated from the gap 35, an annular groove 331 used for avoiding the limiting ring 341 is formed in the inner side wall of the second sleeve 33, the limiting ring 341 slides in the annular groove 331 along the length direction in the second sleeve 33 in the process of screwing along the length direction of the connecting pipe 34, and the outer diameter size of the limiting ring 341 is matched with the inner diameter size of the annular groove 331. The limiting ring 341 is used for preventing the second cannula 33 from being separated from the gap 35, so that the first cannula 32 and the second cannula 33 are separated in the operation, and the use stability of the detection cannula 3 is affected; and spacing ring 341 and the inside wall butt of ring channel 331, cooperation second sleeve pipe 33 and the threaded connection of connecting pipe 34 are favorable to improving the firm in connection degree of second sleeve pipe 33 and connecting pipe 34, avoid second sleeve pipe 33 to swing on connecting pipe 34 circumference and influence the use stability degree of detection sleeve pipe 3 in the art.
And the length dimension of the second sleeve 33 is not greater than the depth dimension of the gap 35, and the structure can enable the second sleeve 33 to be submerged into the gap 35 when being screwed into the gap 35 on the connecting pipe 34, so that the end part of the connecting pipe 34 can be exposed, the limit ring 341 is conveniently screwed in from the end part of the connecting pipe 34, the assembly difficulty of the detection sleeve 3 is reduced, and the disassembly and assembly efficiency is improved.
One end of the push-pull rod 4 far away from the search disc 1 is hinged with the end part of the operating rod 5, the middle part of the operating rod 5 is hinged with the detection sleeve 3, and the operating rod 5 can drive the search disc 1 to be retracted into the detection channel 31 or pushed out from the end part of the detection sleeve 3 through the push-pull rod 4 in the process of rotating around the hinged part with the detection sleeve 3. The hinged part of the detection sleeve 3 and the operation rod 5 is provided with an operation handle in a bending way, so that the simplicity degree of controlling the push-pull rod 4 can be improved when the operation handle is matched with the operation rod 5, and the detection sleeve 3 is also convenient for medical staff to operate.
The push-pull rod 4 is hinged with the operation rod 5 through the hinging shaft 6, a sliding groove 41 for the hinging shaft 6 to slide along the length direction of the push-pull rod 4 is arranged on the push-pull rod 4, the sliding groove 41 penetrates through the push-pull rod 4 in the radial direction, and the length direction of the sliding groove 41 is arranged along the length direction of the push-pull rod 4; the length dimension of the detection sleeve 3 can be increased or decreased in the process of screwing the second sleeve 33 and the connecting pipe 34, at this time, the hinge position of the push-pull rod 4 and the operating rod 5 needs to be changed along with the sliding of the second sleeve 33 in the gap 35, so that the sliding of the hinge shaft 6 on the push-pull rod 4 can be realized by setting the sliding groove 41, and the effective control of the push-pull rod 4 can be realized by matching with the operating rod 5.
The operation rod 5 is rotationally connected with the hinge shaft 6, the middle part of the hinge shaft 6 is vertically provided with a fastening screw 61, the fastening screw 61 and the hinge shaft 6 are in a T-shaped structure, the push-pull rod 4 is provided with a fastening chute 42 for the fastening screw 61 to penetrate, one end of the fastening screw 61 penetrating out of the fastening chute 42 is in threaded connection with a fastening nut 62, the fastening chute 42 penetrates to the sliding chute 41, the length direction of the fastening chute 42 is consistent with the length direction of the push-pull rod 4, and the hinge shaft 6 is fixedly connected with the push-pull rod 4 when the fastening nut 62 in threaded connection with the fastening screw 61 is abutted to the outer side wall of the push-pull rod 4. The connection state of the hinge shaft 6 and the push-pull rod 4 can be controlled by screwing the fastening nut 62 on the fastening screw 61, when the length of the detection sleeve 3 needs to be adjusted, the fastening nut 62 is loosened, then the second sleeve 33 is rotated until the length of the detection sleeve 3 conforming to the detection depth is adjusted, the hinge shaft 6 slides along the length direction of the sliding groove 41 in the rotating process of the second sleeve 33, meanwhile, the fastening screw 61 also slides along the length direction of the fastening sliding groove 42, and finally the fastening nut 62 is screwed down, so that the metal detection in the abdominal cavity can be performed.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.